This is the washing procedure for the primary mirror, as it is done in place (without removing it from the telescope). De esta forma se realiza el lavado del espejo "In Situ" (sin removerlo del telescopio) Gemini Observatory Image/Video Usage Policy MPEG-4 Movie (28.5 Mb) en español - english subtitles. iTunes/Quicktime movie (32.8 Mb) en español - english subtitles.